upgrade lombard potato to woody

[Rory Campbell-Lange <rory@campbell-lange.net>]

I've been having trouble getting X to run on my Lombard powerbook, and I
hope that if I update my install to woody things will get a little
easier.

I'd be grateful to know what I should change in my sources list to do
this. Presumably I then simply run apt-get update and then apt-get
dist-upgrade?

My sources list currently holds the following:

deb http://www.uk.debian.org/debian stable main contrib non-free
deb http://non-us.debian.org/debian-non-US stable/non-US main contrib non-free
deb http://security.debian.org stable/updates main contrib non-free

Thanks for any help
Rory